Extension table



June 2,1925. 1,540,121

A. T. HEYMANN EXTENS ION TABLE A. T. HEYMANN EXTENSION TABLE Filed Aug. 26. 1921 Jun.: 2, w25.v

4 Sheets-Sheet s June 2, 1925.

A. T. HEYMANN EXTENSION TABLE Filed Aug. 2e, 1921.`

4 Sheets-Shget 4 Patented June 2, QS.

UNITED STAT y islam ALFRED T. HEYMANN, 0F HAVIBURG, GERMNY.

nii'rnnsron TABLE.

Application inea August as, 1921. serial No., 495,536.

lVly invention relates to extension tables and more 'especially to extension tables of circular or oval lform. Circular extension tahles 'are old which have underneath the norin al lea-f oi the table extension 'boards which. zitter "thev table has heen extended, are tnl'rn'ed npwardso as to he within'the plan of 'the table leal'. These old tahles 'aire as a rulejso formed, that at least the lateral edges of the yentended talole are parallel to theslides i It is an object of 'my invention `to; "provide an extension `table of circular or oval 4form which is oval 'when extended, 'whereby the advantage is o'lotained that all the persons sitting roundthe tables can 'seefone another 'without bending forward.

Extension tables of Circular or oval 'form are old, which when extended 'are 'also oval. In 'these tables, however, loose boards must loe inserted after the table has been extended and the central portion ol the tahle 'wh'ieh is removed must be stored away sepfzirae'ly.

New, 'the object ot my invention yis "not only, as mentioned above, to keep the 'extension boards below the tables boards vand bring them into the plane off `the table hoard by turning upwards, lout I des-ire also to discard the normal central portion ot the table, which, it the table is to 'tuliill its pfnrpose, can only he done by conoealing 'this normal central portion oft the ta'hle 'leaf mechanically within the table. c

According tomy invention, not "only, vas* is known the extension boards, but also the normal central portion ofthe tahleleat `are so arranged, that they may he folded into the table and brought into the plane of the tahle leaf respectively. y

It is howeveigto he considered, that on the one hand, as my invention relates to tables of Circular or oval `form, less space is available for the arrangement 'ot the erstension plates, than ,with the ordinary tables the longitudinali edges ot which are parallel lto the slides.L In particular, as the onter slides are Conparatively very short and the extensions must overlap approximately `for the same amount 'as in long extensions, Va greater number of extensions is necessary which further limits the free 'distante hetween Vthe slides. Y 4

On the other hand, it is to be considered, that if it is be desired to convert a small "circular or oval table into a large oval table.v the exteiisions innst not only have onrved edges, h-ntalso greater dimensions the transverse direction of the talole, than in ert- Vtension tables having parallel lateral edges.

The solution of 'the Aprololefin is, thertore Connected with particular diienlties. These diiilcnlties lare overcomel according, to my 'invention in the following` manner A: Not only the extension hoards, ont also the central portions oi theta-bles leaf whiehjcan heldispensed with alter the "extension has heen eiected are hinged ,to 'the table Sothat, when 'the table is extended, the original Central port-ions of the table leaf are folded into lthe tahle';V and the larger ex'teiisionplates are 'folded intoftherplace of 'the table leaves so as ,to .torni a larger table which is also oval.

The 4tahle according to my invention he constructed in two ways. `It is possible either to ainange the normal Central portion of the ltali-le leaf` and the larger extension plat-es on a1 Common h'ifngdso that ythe two kinds opla-tes can be turned round simultaneously and one kindje Concealed lin the table, when the other kindis 'usedfr Ithe VLarr'angelnent may .he suoli, that the normal central 'port-ion ot' the table hoard and the extension leaves are adapted to be folded 'by tnrningahont separatehinges which are arrangedin separate horizontal planes. In this case, however, the normal 'central 4portions oft the table canonly he yfolded 'into the table after the tahl'ehas been extended so far lthat the portions "referred to lie sideways of 'the extension plates. If "now Athe extension Aplates are lturned into the planeet the table leaf, the table 1may agfain be .pushed 4tonether so. 'fai' that the ydesired extended oval table is formed, the normal central portion of the table board being disposed underneath the extension leaves.

In the drawings aliixed to this specification and forming part thereof, two modiiications of a table embodying my invention are illustrated diagrammatically by kway of example. In the drawings- F ig. l is a plan view of a table of circular form, which by means of an exten sion plate can be converted into a larger table of oval form,

Fig. 2 is a section on line A-A of Fig. l,

Fig. 3 is a plan View of the extended oval table, I

Fig. 4 is a section on line B-B of Fig. 3,

Fig. 5 is a plan view of a circular t-able which` by means of Vtwo extensions can be converted into a larger oval table,

Fig. 6 is a section on line C-C of Fig. 5, Fig. 7 shows the extended oval table and Fig. 8 is a section on line D-'D of Fig. 7. Referring to the drawings, the tabl-e illustrated in Fig. l is of circular form, but it may as well be oval without departing from my invention. l is the frame and 2 are thek legs of the table. The leaf of the table is, in the normal as well as in extendedcondition, formed of three portions, the end portions 3 and 4 and the central portion 5. The end portions 3 and 4 are connected with one another bythe normal slides 6, so that the end portions 3 and 4 can be drawn apart as usual in extension tables. In the example illustrate-d, the legs 2 and the frame l remain stationary. The central portion 5 is also composedV of two or, as illustrated, three sections, which are connected by hinges. a and Z) are the outer sections, while c is the central section. Both outer sections can be folded, as illustrated by dotted lines in Fig. 2, and maintained in this position by means of a bolt 7.Y One of the sections formfing the central insertion 5, here section c,

is pivoted on an axle 8 arranged in the diainn eter of the table, preferably by hinges 9, so that, when the sections a, b and c are folded as illustrated in Fig. 2, the central portion 5 can be turned about axle 8. The ends of the axle 8 are,in the example illustra-ted, secured in the frame. Y

If it be desired to convert this circular table into a larger oval tabl-e, the central portion 5 will be too small, so that a larger central portion must. be substituted for it. For this purpose an insertion 10 is arranged below the table leaf which, in theexample shown, also consists of three sections, a central section d and the two end sections le and This insertion is not only'longer, but also wider than the normal insertion 5. It is preferably of such dimensions as to find room in the frame l, (Fig. 1). The sections al, c and f of this insertion 10 are connecte-d with one another by hinges vand the outer edges of the end sections e and are such form that after they have been ex tended, the table is oval andformed to a continuous curve, so that all persons sitting round the table may see each other without bending forward. As the insertion 10 is of greater dimensions than the normal insertions, the end sections e and f, when folded, overlap and are held by a bolt 11.

The insertion l0 is also hinged to the axle 8 at the centre of the table, preferably by means of hinges 12, so that it can be rotated about axle 8. As the two insertions 5 and l0 are placed over one another, one of them must take part in the rotation of the other, that is, if one is concealed, the other will appear. p

By means of this construction the circular table illustrated in Fig. l can be converted into the larger oval table indicated by dotted lines in Fig. 3. This is simply effected by folding the end sections a and of the smaller insertion 5 onto their central section-0, whereupon the end sections 3 and 4 of the plate are drawn apart, which is eifectedby means of the slides in the usual manner, whereupon the folded insertion 5 Vis turned on the axle 8, whereby the smaller insertion 5 is concealed in the table while the larger insertion 10 appears and may be brought into the plane of the table leaf by unfolding sections e and f. The smaller insertion 5 is now vdisposed underneath the table leaf. Preferably that portion which is under thetable leaf, ismaintained in its position, so that it cannot move farther.

-In the second modification of my invention illustrated in Figs. 5-8, the same prin-k ciple is applied, but to a table whose frame is also divi-ded so that it is displaced together with the table legs, when the table is extended. At the same time, a greater extension of the table is desired here and consequently two insertions are provided.

As appears from Fig. 5, the table is circu` lar, but it might also be oval without departing from my invention. In proportion to the greater extension of the table, the number of slides 6 has been increased. The

`central portion intermediate the two end portions 3 and 4 of the table is divided into two sections 5 and 5". 'Each section of this central portion is lagain divided in the middle, so that the Section5 is formed of two halves g and 7L and section 5 of two halves z' and 7c. Instead of an axle which passes right through the table, the two insertions 5 and 5 are arranged on two sepa rate. axles 14v `and l5, which are not disposed in the centre ofthe table, but laterally to it, and carried in theend portions 3 .and 4,

respectively. rWhen these central insertions are folded, each of the twohalves 5 anc 5 is folded, section 7L being folded on section g and section L' on section z'. When these centrai insertions are free to be unfolded, which, as will be shown, is only possible after the table has been extended, the insertion 5 will turn about the axle 14 and the insertion 5 about the axle 15, so that/both sections of the insertions take up the position illustrated in Fig. 7, in which, when unfolded, they are supported-by holders 16 and 16, respectively, which are arranged at the end portions 3 and Ll adapted to be drawn apart.

Then the table has its normal form, two insertions 1T and 18, respectively, are disposed underneath the table leaf. Each of these insertions again consists of two halves, Z, m and a, 0, respectively, which are hinged to one another. These insertions turn on pins 19, 19 and 20, 20', respectively, which are carried by arms 21, 9,1 -and 22, 22', respectively. The arms 21,21 are secured to the saine slide, for instance 6, and the arms 22, 22, to another slide, for instance 6, preferably in such a manner, that, on the table being extended, one of the extension plates moves to one side and the other to the other. The pins 19 and 20 extend in different horizontal lines, so that, as will best be seen from Fig. 6, thev two extension plates are disposed below one another and below the table leaf at the normal condition of the table. They are supported in this position by holders 28, 24.

If this table is to be extended bydrawing apart the end portions 3 and 1, it must at first be extended until the insertions 5 andy 5, respectively, which are on top in their normal position, stand beside the extension plates 17 and 18, respectively. It follows, that the table must at first be extended as far as the` position illustrated in Fig. 7. In the modification illustrated, the frame and legs will also be displaced during this extension. It may be mentioned here, that, when the end portions are farthest apart, loose `insertions might be placed between these portions. In this manner, a table will be formed having straight and parallel lateral edges and two semi-circular ends.

The principal object of my invention, however, is, to provide a. table which is of oval form also when extended, so that it forms a continuous curve and the persons sitting round the table can see one another without bending forward. If now, as inentioned, the table is extended so far, that the normal insertions 5 and 5, respectively, stand beside the extension plates 17, 18, all plates may now be unfolded or maybe turned on their hinges, first the normal insertions 5 and 5', which must be concealed underneath the table leaf. The extension plate 17 is brought into the plane of the table leaf by turning it about the axles 19, whereupon the two sections Z and m are unfolded and the extension plate is in a position to be used. VIn the same manner, the extension plate 18 can now be turned upward about pins 20, 20. If now, after the extension plates are in position, they two end portions 3 and '4 are pushed together, first the straight edge of these end portions will enga-ge the straight edges of the `extension plates 17 and 18, so that Vthe table has the oval form indicated at the centre of Fig. 7. During this pushing together, the `insertions 5 and 5, which had previously been folded into the table, will be moved below the table leaf formed by the extension plates 17 and 18.

Obviously, there might be a greater number of extension insertions, if a further extension of the table is desired.

The principle illustrated in Figs. 5MG, where the axles for the smaller central insertions and for the extension plates are separate, may falso be employed in the tables with only a single extension plate, as illustrated in Figs. 1A.

I claim:

1. An extension table of ysubstantially curved peripheral configuration comprising in combination, a pair of end leaves, pairs of slides underneath said leaves and a foldable middle leaf and a foldable insertion leaf, one on top of the other hingedly attached between and roclrable about an axis extending in parallel to said slides, the unfolded insertion leaf being of greater length and width than the unfolded middle leaf.

2. An extension table of substantially y curved peripheral configuration comprising in combination, a pair of end leaves, pairs of slides underneath said leaves, and a foldable middle leaf and a foldable insertion leaf with curved lateral edges, one on top or ytheother, rockable about axes extending in parallel to said slides, the unfolded insertion leaf being of greater length and width than the unfolded middle leaf.

3. An extension table of substantially curved peripheral rconnguration comprising in combination, a pair of end leaves, pairs of slides underneath said leaves, and a fold` able middle leaf and a foldable insertion leaf with curved lateral edges, one on top of the other, hingedly attached between and rockable about axes extending in parallel to said slides, the unfolded insertion leaf being of greater length and width than the unv folded middle leaf.

t. An extension table of substantially curved peripheral configurationv comprising in combination, a pair of end leaves, slides;

extending underi'ieath said end leaves, a pair of middle and a pair of insertion leaves, with curved lateral edges, said middle and said insertion leaves being foldable about axes extending in parallel to said slides, said middle leaves being` hingedly attached to said end leaves, said insertion leaves being loo lib

hingedly attached to said slides and being broader than said middle leaves.

5. An extension table of substantially curved peripheral configuration comprising in combination, a pair of end leaves, slides extending underneath vsaid end leaves, a pair of middle and a pair of insertion leaves with curved lateral edges, disposed in dilierent planes and foldahle about aXes extending in parallel to said slides, said middle in leaves being hingedy attached to said end leaves, While said insertion leaves are hingedly attached to said slides and are broader than said middle leaves.

In testimony whereof I aiix my signature.

ALFRED T. HE YMANN. 

